Attachment for reproducing devices



March 6, 1928.

1,661,286 T. N. HANSEN ATTACHMENT FOR REPRODUCING DEVICES Filed June 6, 192'? 2 Sheetsheet 1 l rd Swan/14 501; Yize'odalre Mfiansm W w. W

' drrom March 6, 1928. 1,661,286

' T. N. HANSEN ATTACHMENT FOR REPRODUCING DEVICES Filed June 6, 1927 2 Sheets-Sheet 3 nuentot Theodore M Hansen 6 Patented Mar. 6, 1928.

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l I Application flledJnne 6, 1927. Serial No..196,912.i

' This invention relates to attachments for "reproducing devices and is an improvement over my prior invention entitled Reproducingdevices as described in an application filed May 24, 1926, Serial Number 111,- 443, and allowedMarch26, 1927. The primary objects of my present inventionare to provide, in conjunction with a transpars ent screen mounted on astand and a'slghtmg instrument; means whereby points may be marked on said screen bythe operator while standing at a :distance therefrom. The simple and efiicient mechanical contrivances for effecting these objects in combinat-ion with certain structural details and arrangement of parts as more fully hereinafter described constitute the novel features of my device. I

' In the drawings: i g

Figure 11s a view in perspective showing the general application of the deviceasta whole; V

Fig. 2 1s a View in side elevationsho'wing the principal features of the device;

Fig.- 3 is a view in end elevation of'the control box; and Fig. 4 is a View in front elevation of the marker bar and associated parts. V f Referring to thedrawings throughout which like reference-numerals designate like parts, the numeral 5 indicates atransparent screen that is preferably made of glass and set'in a frame 6 that is mounted on .a stand.7. The numeral -8 designates 'a sighting instrument that ismounted on a tripod 9 for horizontal andverticalimovement. The numeral 10 indicates a control boxthat 'is mounted on. a stand 11 and which will. be more fully hereinafter. de-

scribed. i A metal plate 12 is'fixedlysecuredto one side of the frame .6 and anotherplate 1.3 is mounted against the first named'plate and adapted to revolve thereon by means presently set forth. A pipe 14 connects'the control box' 10 with the plate 13 and may comprise a plurality of sections as indicated by Joints 15rso that'thedistance-between said control box and plate may be altered by removing or ad-dingasection as desired.

One end portion of the pipe 14 is revolubly mounted inthe forward end wall 16 of the box 10 and its extreme end is likewise mounted in ,a partition 17 that is spaced slightly to the rear of said endwalli A. relatively large'toothed wheel18 nter- I wall.

posed between said end wall and partition is fixedlymounted'onsaid 'pipe. A small" pinion 19 in meshw'ith saidv toothed'wheel has its axle 20 mounted in bearings secured to saidwall and partition anda knob 21-on the end of said axle provides ineans where? by said pinion may be manipulated with the fingers. I f' The other end;- portion of the pipe ,141is fixedly connected with the plate13 by four bracket arms 22 secured tosaid plate and to a collari23 that is also secured to said plpe. It wlll nowbe obvious that by turn-v ing'the toothed wheel 18 the plate '13 will revolve therewith and that slow motion of 1 said plate may be caused by turning the pinion knob 21. A pin 24 slidably mount 'ed on the partition 17 may be arranged in any suitable manner to jam between the teeth of said-wheel'so as to"hold"th'e-wheel and plate stationary atany desired point as will be understood. 7

A relativelylong arm 25 is arranged for longitudinal movement by beingw mounted in guides 26 secured fto theplate A marker bar28-is pivoted-at itsaouter end the bend of said U standards. The inner end of; said marker baris provided with an adjustablebracke't 31-for holding the mark er 32which may be a pencil, pen, crayon or other device for mark ng points or making dots on the screen. 1 4

A' slender. shaft 33 extends entirely through the pipe 14 and may be jointed in conformitywith said pipe so that its length e I be' a'ltered therewith The outer endr of said shaft has itsbearinglin the rear may wall 34 of'the' control .box '10 and also in a partition 35 spaced slightly forwardof said- A toothed wheel36 interposed between said wall and partition is keyed to '13. Said arm has aplurality ofU, standards 27Jsecured thereto, in spacedrelation.

said shaft and a'small pinion 37 is in mesh with said wheel. The axle of said pinion is mounted in bearings secured to said wall and partition and is provided" with a knob 38 whereby same may be turned for slow motion with-the fingers. A pin 39 slidably I mounted on said end wall is adapted to jam between the teeth of said wheel for holding 7 same stationary at any desired point 7 pivotal support therefor. I

wheel 41 is keyed to said shaft close to the picture. .close to. the sighting instrument so that the The inner end of the shaft 33 has its bearing in the plates 12 and 13 in any-suitable manner as at 40 in Fig. '2, it being understood thatthe plate13 is arranged to revolve freely on same which serves as a plate 13 and engages a rack-42 on, the t n;-

derside of the arm 25. Thus it will be apparent that by turning the wheel 36 said shaft and gear will cause said arm'together with the marker bar device to slidably move backer forth asdesired.

I The means for pivotally depressing the 'marker bar 28 and causing the marker 32 to make an impression on the. screen com prises a slender rod 43 that extends through thepipe 14 nearly its. full length. Said rod may be jointedin conformity with said pipe and shaft 33 so that its length may be altered therewith. The outer endof said rod terminates with in the controlibox 1O bet-ween the partitions 1 7 and 35where it is provided with a handle 44. a The inner end of said rod I terminatesshort of the pipe14= and is bent at r ght anglesv toform a finger 45 which 1S always 1n, engagement with the marker bar 28. A, slot 16 is providedin the end of said pipe so thatsaid finger maymove back, and forth therein. It will now be obvious that in slidably moving said rod inwardly by means of its handle saidofinger; will depress at the, proper distance tov interce t all the.

lines of site that are to be. incluc ed in'the The control box'and stand are operator may reach samefor manipulation while sighting through the. instrument. The instrument isv then sighted at a controlling point, such as the top of the tree, and by means of the toothed wheel 18 the marker J-device isrotated to the proper alignment I while the wheel 36 is rotated to slide said device-backor-forth until the-point of the marker 32 is directly over the point where A small gear the line of sight intercepts the screen. Then",

by means of the handle 44 the markerbar 28 is depressed when its marker will make a dot on the screen at this point. This process is repeated until a suflicient number of points have been reproduced on the screen for drawing inthe picture.

' It will be understood that my device may. i

be used for enlarging as well. In this case the picture to be enlarged is placedbetween the screen and level and'the procedure is otherwise substantially the same.

Having thus described my invention,.it

being understood that minor changes may be 1 resorted to in itsv construction without departing from its scope and spirit whatI claim and desire to secure by Letters Patent of theiUnited States is i g v p 1. The combinationwith' a screen and a sighting instrument, of an attachment for reproducing devices comprising a: control box, connecting means between! said; screen and box adapted for axial rotation, and a marker bar devicearrangedtobe sw'ung fover the entire surface of the screenbyr axial rotation oi said connecting means 2. The combination with av screen and a sighting instrument, of an attachment for reproducing devicescomprising a control box disposed at ZcdlSiHIICG from the screen, a

pipe connecting saidscreen and box ar- 1 ranged for, axial rotation; a, marker bar device adapted to be swung" over the entire suriace'of the screen by axial rotationofthe pipe, and connecting means carried'by; said pipei'or causing the bar to slidably move the full length and width of the screen' The combination withca screenand a sighting instrument, of an attachment. for reproducing devices comprismg acontrolbox disposed at a distance from .the, screen; a

pipe connecting said'screen andboxadapted for axialrotation axmarker bar;-device.ar-

oflthe screen axial rotation. of the pipe, connecting means between the box" andrf'bar for causing the bar to slidably move the full lengthand width ofthe screen,-and;con

necting means between the box andbar for pivotally depressing said 1 bar to a point of contact with the screen.

,rangedto be. swung over. the entiresurface 1 I In witness whereof, I hereunto subscribe my name this 30th/dayof May A LD. 11927; i i THEODORE Hansen; 

